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https://www.readbyqxmd.com/read/28104392/scutellarein-antagonizes-the-tumorigenesis-by-modulating-cytokine-vegf-mediated-neoangiogenesis-and-dff-40-actuated-nucleosomal-degradation
#1
Prabhu Thirusangu, V Vigneshwaran, B R Vijay Avin, H Rakesh, H M Vikas, B T Prabhakar
Neoplastic cells often reside in distinctive tumor hypoxia armed with a series of adaptive responses including oxidative stress, defective apoptotic machinery and neoangiogenesis, through that further confer cell survival improvement. Plants still acts as reservoir of natural chemicals to provide newer active pharmacophores. Scutellarein is flavones which has wide range of pharmacophoral effects. In our current research, scutellarein employed for targeting oxidative stress mediated tumor angiogenesis and apoptotic nuclear fragmentation...
January 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28102506/a-comparison-of-flt-to-fdg-pet-ct-in-the-early-assessment-of-chemotherapy-response-in-stages-ib-iiia-resectable-nsclc
#2
John P Crandall, Abdel K Tahari, Rosalyn A Juergens, Julie R Brahmer, Charles M Rudin, Giuseppe Esposito, Deepa S Subramaniam, Michael V Knopp, Nathan C Hall, Prateek Gajwani, Jeffrey P Leal, Martin A Lodge, Joo H O, Edward W Gabrielson, Lalitha K Shankar, Richard L Wahl
BACKGROUND: The aim of this study was to compare the percentage change in (18)F-fluorothymidine (FLT) standard uptake value (SUV) between baseline and after one cycle of chemotherapy in patients categorized by RECIST 1.1 computed tomography (CT) as responders or non-responders after two cycles of therapy. Change in (18)F-fluorodeoxyglucose (FDG) uptake was also compared between these time points. Nine patients with newly diagnosed, operable, non-small cell lung cancer (NSCLC) were imaged with FDG positron emission tomography/CT (PET), FLT PET/CT, and CT at baseline, following one cycle of neoadjuvant therapy (75 mg/m(2) docetaxel + 75 mg/m(2) cisplatin), and again after the second cycle of therapy...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28091565/-18-f-flt-and-18-f-fdg-pet-ct-in-predicting-response-to-chemoradiotherapy-in-nasopharyngeal-carcinoma-preliminary-results
#3
Shi Qi, Yang Zhongyi, Zhang Yingjian, Hu Chaosu
The purpose of this study was to explore the feasibility of (18)F-Fluorothymidine ((18)F-FLT) and (18)F-Fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) in predicting treatment response of nasopharyngeal carcinoma (NPC). Patients with NPC of Stage II-IVB were prospectively enrolled, receiving 2 cycles of neoadjuvant chemotherapy (NACT), followed by concurrent chemoradiotherapy. Each patient underwent pretreatment and post-NACT FLT PET/CT and FDG PET/CT. Standard uptake values (SUV) and tumor volume were measured...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28060742/overexpression-of-lncrna-anril-up-regulates-vegf-expression-and-promotes-angiogenesis-of-diabetes-mellitus-combined-with-cerebral-infarction-by-activating-nf-%C3%AE%C2%BAb-signaling-pathway-in-a-rat-model
#4
Bo Zhang, Dan Wang, Tie-Feng Ji, Lei Shi, Jin-Lu Yu
OBJECTIVE: This study aimed to explore the effects of lncRNA ANRIL on vascular endothelial growth factor (VEGF) and angiogenesis in diabetes mellitus (DM) combined with cerebral infarction (CI) through NF-κB signaling pathway. METHODS: Adult male Wistar rats were randomly divided into control group and DM + CI group, and the DM + CI group were subdivided into Vector, shANRIL, PDTC, pcDNA-ANRIL, and pcDNA-ANRIL + PDTC groups. VEGF and FMS-like tyrosine kinase (FLT-1) expressions were measured by immunohistochemistry and endothelium dependent microvessel density (MVD) was detected by differentiation 31 (CD31) and para-amiuosalicylic acid (PAS) double staining...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28048721/su-f-j-222-using-pet-imaging-to-evaluate-proliferation-and-blood-flow-in-irradiated-and-non-irradiated-bone-marrow-1-year-after-chemoradiation-therapy
#5
S McGuire, L Ponto, Y Menda
PURPOSE: To compare proliferation and blood flow in pelvic and thoracic bone marrow 1 year after pelvic chemoradiation. METHODS: Sixteen pelvic cancer patients were enrolled in an IRB-approved protocol to acquire FLT PET images during radiation therapy simulation (baseline) and 1 year after chemoradiation therapy. Three subjects also had optional O-15 water PET images acquired 1 year after chemoradiation therapy. Baseline FLT PET images were used to create IMRT plans to spare pelvic bone marrow identified as regions with FLT SUV ≥ 2 without compromising PTV coverage or OAR sparing...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047001/mo-ab-bra-06-dynamic-flt-pet-for-investigating-potential-synergistic-therapeutic-targets-during-anti-angiogenic-treatment
#6
M Scarpelli, U Simoncic, S Perlman, G Liu, R Jeraj
PURPOSE: Novel treatment strategies for metastatic cancer patients involve synergistically combining treatments with the hope of improving outcomes. This study investigated changes in tumor proliferative and vascular characteristics derived from dynamic [F-18]FLT PET during antiangiogenic treatment with the goal of identifying synergistic treatment opportunities. METHODS: Patients with various solid cancers underwent continuous three-week cycles of anti-angiogenic treatment with intermittent dosing (two-weeks-on/one-week-off)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046517/we-h-207a-03-the-universality-of-the-lognormal-behavior-of-f-18-flt-pet-suv-measurements
#7
M Scarpelli, J Eickhoff, S Perlman, R Jeraj
PURPOSE: Log transforming [F-18]FDG PET standardized uptake values (SUVs) has been shown to lead to normal SUV distributions, which allows utilization of powerful parametric statistical models. This study identified the optimal transformation leading to normally distributed [F-18]FLT PET SUVs from solid tumors and offers an example of how normal distributions permits analysis of non-independent/correlated measurements. METHODS: Forty patients with various metastatic diseases underwent up to six FLT PET/CT scans during treatment...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043794/synthetic-strategy-for-increasing-solubility-of-potential-flt3-inhibitor-thieno-2-3-d-pyrimidine-derivatives-through-structural-modifications-at-the-c2-and-c6-positions
#8
Changmok Oh, Hyuntae Kim, Jong Soon Kang, Jieun Yun, Jaejun Sim, Hwan-Mook Kim, Gyoonhee Han
Acute myeloid leukemia (AML) is a clonal disorder of hematopoietic progenitor cell. In AML, a mutation in FLT3 is commonly occurs and is associated with poor prognosis. We have previously reported that thieno[2,3-d]pyrimidine derivative compound 1 exhibited better antiproliferative activity against MV4-11 cells which harbor mutant FLT3 than AC220, which is a well-known FLT3 inhibitor, and has good microsomal stability. However, compound 1 had poor solubility. We then carried out further structural modification at the C2 and the C6 positions of thieno[2,3-d]pyrimidine scaffold...
December 23, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28042315/preclinical-applications-of-3-deoxy-3-18-f-fluorothymidine-in-oncology-a-systematic-review
#9
REVIEW
Sonja Schelhaas, Kathrin Heinzmann, Vikram R Bollineni, Gerbrand M Kramer, Yan Liu, John C Waterton, Eric O Aboagye, Anthony F Shields, Dmitry Soloviev, Andreas H Jacobs
The positron emission tomography (PET) tracer 3'-deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT) has been proposed to measure cell proliferation non-invasively in vivo. Hence, it should provide valuable information for response assessment to tumor therapies. To date, [(18)F]FLT uptake has found limited use as a response biomarker in clinical trials in part because a better understanding is needed of the determinants of [(18)F]FLT uptake and therapy-induced changes of its retention in the tumor. In this systematic review of preclinical [(18)F]FLT studies, comprising 174 reports, we identify the factors governing [(18)F]FLT uptake in tumors, among which thymidine kinase 1 plays a primary role...
2017: Theranostics
https://www.readbyqxmd.com/read/28033279/the-effect-of-fenestration-of-the-lamina-terminalis-on-the-incidence-of-shunt-dependent-hydrocephalus-after-aneurysmal-subarachnoid-hemorrhage-fish-study-protocol-for-a-randomized-controlled-trial
#10
Chuanyuan Tao, Chaofeng Fan, Xin Hu, Junpeng Ma, Lu Ma, Hao Li, Yi Liu, Hong Sun, Min He, Chao You
BACKGROUND: Shunt-dependent hydrocephalus (SDH) is a well-known sequela following aneurysmal hemorrhage, adversely affecting the outcome after securing ruptured aneurysm. Fenestration of lamina terminalis (FLT) creates an anterior ventriculostomy, facilitates cerebrospinal fluid circulation and clot clearance in the basal cistern. However, controversy exists over whether microsurgical FLT during aneurysm repair can decrease the incidence of SDH. AIMS: The study is designed to determine the efficacy of lamina terminalis fenestration on the reduction of SDH after aneurysm clipping...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28002269/efficacy-of-intravitreal-aflibercept-in-macular-telangiectasia-type-1-is-linked-to-the-ocular-angiogenic-profile
#11
Laura Kowalczuk, Alexandre Matet, Ali Dirani, Alejandra Daruich, Aude Ambresin, Irmela Mantel, Richard F Spaide, Natacha Turck, Francine Behar-Cohen
PURPOSE: To evaluate intravitreal aflibercept in macular telangiectasia Type 1 (MacTel 1) patients and measure their ocular angiogenic profile. METHODS: Eight subjects with MacTel 1 refractory to bevacizumab, ranibizumab, or laser therapy and switched to aflibercept were included. Best-corrected visual acuity, central macular thickness, and cystic areas quantified on optical coherence tomography B-scans were assessed during 12 months. Perifoveal capillary densities were measured on optical coherence tomography angiography...
December 20, 2016: Retina
https://www.readbyqxmd.com/read/27989880/spatholobi-caulis-extracts-promote-angiogenesis-in-huvecs-in-vitro-and-in-zebrafish-embryos-in-vivo-via-up-regulation-of-vegfrs
#12
Zhong-Yan Zhou, Li-Yun Huan, Wai-Rong Zhao, Nuo Tang, Yu Jin, Jing-Yi Tang
ETHNOPHARMACOLOGICAL RELEVANCE: Spatholobi Caulis is a traditional blood-activating and stasis-dispelling herb medicine, which has been used to treat diseases related to blood stasis syndrome (BSS) by inhibiting platelet aggregation, stimulate hematopoiesis, etc. It has been demonstrated that pro-angiogenesis could improve BSS. However, the pro-angiogenic activity of Spatholobi Caulis was not well elucidated. AIM OF STUDY: To determine the potential pro-angiogenic activity of Spatholobi Caulis and elucidate its underlying mechanism...
October 27, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27965135/effective-targeting-of-gemcitabine-to-pancreatic-cancer-through-peg-cored-flt-1-antibody-conjugated-dendrimers
#13
Kıvılcım Öztürk, Güneş Esendağlı, Mustafa Ulvi Gürbüz, Metin Tülü, Sema Çalış
Tumor-targeted delivery of anticancer drugs using dendrimers has been recognized as a promising strategy to increase efficiency and reduce adverse effects of chemotherapy. Herein, we developed a dendrimer-based drug delivery system targeting Flt-1 (a receptor for vascular endothelial growth factors (VEGF)) receptor to improve therapeutic efficacy of gemcitabine in pancreatic cancer. Synthesized polyethylene glycol (PEG)-cored PAMAM dendrimers, which bear anionic carboxylic acid groups on the surface were modified with PEG chains, which were then conjugated with Flt-1 antibody...
December 10, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27957722/dynamic-pet-evaluation-of-elevated-flt-level-after-sorafenib-treatment-in-mice-bearing-human-renal-cell-carcinoma-xenograft
#14
Naoyuki Ukon, Songji Zhao, Wenwen Yu, Yoichi Shimizu, Ken-Ichi Nishijima, Naoki Kubo, Yoshimasa Kitagawa, Nagara Tamaki, Kei Higashikawa, Hironobu Yasui, Yuji Kuge
BACKGROUND: Sorafenib, an oral multikinase inhibitor, has anti-proliferative and anti-angiogenic activities and is therapeutically effective against renal cell carcinoma (RCC). Recently, we have evaluated the tumor responses to sorafenib treatment in a RCC xenograft using [Methyl-(3)H(N)]-3'-fluoro-3'-deoxythythymidine ([(3)H]FLT). Contrary to our expectation, the FLT level in the tumor significantly increased after the treatment. In this study, to clarify the reason for the elevated FLT level, dynamic 3'-[(18)F]fluoro-3'-deoxythymidine ([(18)F]FLT) positron emission tomography (PET) and kinetic studies were performed in mice bearing a RCC xenograft (A498)...
December 2016: EJNMMI Research
https://www.readbyqxmd.com/read/27923827/preclinical-evidence-that-3-deoxy-3-18f-fluorothymidine-pet-can-visualize-recovery-of-hematopoiesis-after-gemcitabine-chemotherapy
#15
Sonja Schelhaas, Annelena Held, Nicole Bäumer, Thomas Viel, Sven Hermann, Carsten Müller-Tidow, Andreas H Jacobs
Molecular imaging with the PET tracer 3'-deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT) allows assessment of the proliferative state of organs in vivo Although used primarily in the oncology clinic, it can also shed light on the proliferation of other tissues, as demonstrated here for monitoring hematopoietic organs that recover after myelosuppressive chemotherapy. In the NMRI nude mouse model, we observed up to a 4.5-fold increase in [(18)F]FLT uptake in bone marrow and spleen on days 2, 3, and 5 after treatment with gemcitabine, a chemotherapeutic agent that is powerfully myelosuppressive in the model...
December 15, 2016: Cancer Research
https://www.readbyqxmd.com/read/27904694/soluble-flt-1-improves-the-repair-of-ankle-joint-injury-in-rats
#16
Jing Tian, Bing Xie, Liangbi Xiang, Yong Zhao, Dapeng Zhou
The ankle injuries create great pain to a great number of patients worldwide. Past studies have focused on the development of practical treatments to relieve pain and improve recovery, but the molecular mechanisms underlying the ankle injuries, especially the local inflammation in the damaged ankle joint, have been rarely studied. Moreover, although reduction of production and secretion of pro-inflammatory cytokines may reduce the pain and promote the recovery, a practical approach is currently lacking. Here, we detected significantly higher levels of placental growth factor (PLGF) and pro-inflammatory cytokines in the joint fluid from the patients of acute ankle joint injury (AAJI)...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27891549/a-pilot-study-of-the-diagnostic-and-prognostic-values-of-flt-pet-ct-for-pancreatic-cancer-comparison-with-fdg-pet-ct
#17
Masatoyo Nakajo, Yoriko Kajiya, Atsushi Tani, Megumi Jinguji, Masayuki Nakajo, Tohru Nihara, Yoshihiko Fukukura, Takashi Yoshiura
PURPOSE: The purpose of the study was to examine the diagnostic and prognostic values of (18)F-fluorothymidine (FLT)-PET/CT for pancreatic cancer by comparing with (18)F-fluorodeoxyglucose (FDG)-PET/CT. METHODS: Fifteen patients with newly diagnosed pancreatic cancer underwent both FLT and FDG-PET/CT scans before treatment. The sensitivity, specificity, and accuracy in detecting nodal and distant metastases were compared between both scans using McNemar exact or χ (2) test...
November 28, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27873232/evidence-based-revised-view-of-the-pathophysiology-of-preeclampsia
#18
Asif Ahmed, Homira Rezai, Sophie Broadway-Stringer
Preeclampsia is a life-threatening vascular disorder of pregnancy due to a failing stressed placenta. Millions of women risk death to give birth each year and globally each year, almost 300,000 lose their life in this process and over 500,000 babies die as a consequence of preeclampsia. Despite decades of research, we lack pharmacological agents to treat it. Maternal endothelial oxidative stress is a central phenomenon responsible for the preeclampsia phenotype of high maternal blood pressure and proteinuria...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27871461/nuclear-factor-of-activated-t-cells-nfat-regulates-soluble-fms-like-tyrosine-kinase-1-secretion-sflt-1-from-human-placenta
#19
Louie Ye, Amy Gratton, Natalie J Hannan, Ping Cannon, Minh Deo, Kirsten R Palmer, Stephen Tong, Tu'uhevaha J Kaitu'u-Lino, Fiona C Brownfoot
INTRODUCTION: Preeclampsia is a serious complication affecting 5-8% of pregnancies. Central to its pathogenesis is placental hypoxia and inflammation which leads to secretion of soluble fms-like tyrosine kinase 1 (sFlt-1). sFlt-1 causes widespread endothelial dysfunction. The molecular mechanisms regulating sFlt-1 production remain poorly understood. Recently, a binding site for the nuclear factor activated T cells (NFAT) transcription factor has been found on fms-like tyrosine kinase 1 (FLT-1) promoter...
December 2016: Placenta
https://www.readbyqxmd.com/read/27870972/mek-erk-signaling-is-involved-in-the-role-of-vegf-and-igf1-in-cardiomyocyte-differentiation-of-mouse-adipose-tissue-derived-stromal-cells
#20
Chunhui Wang, Wenhui Liu, Xianning Zhang, Yinghui Wang, Huan Liu, Haifang Li
BACKGROUND: We found that mouse brown adipose tissue-derived stromal cells (BATDCs), but not white adipose tissue-derived stromal cells (WATDCs), could spontaneously differentiate into cardiomyocyte-like cells in a simple culture medium. This study would find out some critical trophic factors that were responsible for such difference in differentiation, and further determine the involved signaling pathway. METHODS AND RESULTS: The cardiomyocyte differentiation capacity of cells was identified by morphological observations, immunofluorescence staining, and evaluation of expression of cardiomyocyte specific markers...
February 1, 2017: International Journal of Cardiology
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